The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 2023
Filed:
Mar. 25, 2021
Applicant:
Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu, TW;
Inventor:
Bo-Tsung Tsai, Hsinchu, TW;
Assignee:
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/146 (2006.01); H01L 21/266 (2006.01); H01L 29/78 (2006.01); H01L 21/265 (2006.01);
U.S. Cl.
CPC ...
H01L 27/14689 (2013.01); H01L 27/1461 (2013.01); H01L 27/14614 (2013.01); H01L 27/14616 (2013.01); H01L 21/266 (2013.01); H01L 21/26513 (2013.01); H01L 29/7827 (2013.01);
Abstract
A pixel includes a workpiece having a protrusion and a bulk, wherein the protrusion extends from an upper surface of the bulk. The pixel further includes a floating diffusion node in the protrusion. The pixel further includes a gate structure over the bulk, wherein a top surface of the gate structure is above a top surface of the floating diffusion node. The pixel further includes a photosensitive device in the bulk. The pixel further includes an isolation well surrounding the photosensitive device.